Electrical Connector Shielding Sheet Crosstalk Reduction
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Solution Overview
Problem
Existing electrical connectors experience significant signal distortion and crosstalk during high-frequency signal transmission due to the open stab effect and design of terminals in upper and lower rows, which affects transmission quality.
Innovation Solution
Incorporating a shielding sheet and an elastic body within the electrical connector to ensure better contact between mating terminals and contact terminals, reducing crosstalk and improving signal stability by maintaining a consistent contact force through the elastic body's counterforce mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If terminals are arranged in upper and lower rows to enable forward and reverse insertion, then ease of operation is improved, but crosstalk occurs during high-frequency signal transmission
Solution Approach 1:
A shielding sheet is introduced as an intermediary element positioned between the upper and lower row terminals. This shielding sheet acts as a mediator that blocks electromagnetic interference between adjacent terminals, preventing crosstalk while allowing the terminal arrangement to maintain its forward and reverse insertion capability
Solution Approach 2:
The terminal arrangement is segmented into distinct upper and lower rows with the shielding sheet creating a physical and electromagnetic separation between them. This segmentation isolates the electromagnetic fields of adjacent terminals, reducing mutual interference while preserving the functional arrangement
2Ease of manufacture
If the guiding portion of mating terminals is not in contact with the flat plate terminal, then ease of manufacture is improved, but signal transmission quality deteriorates due to open stab effect
Solution Approach 1:
The elastic body is designed to be deformable, allowing it to dynamically adjust its shape during the mating process. When the mating terminal is inserted, the elastic body deforms to guide the terminal and then returns to its original shape, automatically establishing and maintaining optimal contact between the flat plate terminal and mating terminal without requiring precise pre-positioning
Solution Approach 2:
The elastic body performs self-guiding and self-adjusting functions during mating. It automatically deforms to guide the mating terminal into proper alignment and then self-restores to maintain consistent contact pressure, eliminating the need for complex external guiding mechanisms while ensuring reliable electrical contact
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces crosstalk and enhances the stability of high-frequency signal transmission by ensuring consistent contact between terminals, eliminating the open stab effect and improving overall signal quality.
Implementation Method 1
the elastic body applies a counter acting force to the first contact portion of each of the mating terminals, such that the first contact portion of each of the mating terminals abuts the second contact portion of a corresponding one of the contact terminals
Implementation Method 2
a shielding sheet, accommodated in the insulating body... When the electric connector is mated with the mating connector, the first contact portion of each of the mating terminals enters into the mating space and applies an acting force to the elastic body
Data Source
AI summary
An electrical connector is used to mate with a mating connector. The mating connector includes multiple mating terminals, and each mating terminal has a first contact portion. The electrical connector includes: an insulating body having a mating space used to mate with the mating connector; a shielding sheet accommodated in the insulating body; multiple contact terminals, each being accommodated in the insulating body and located at one side of the shielding sheet, and each has a second contact portion exposed to the mating space; and an elastic body accommodated in the insulating body and partially exposed to the mating space. The elastic body is located between the shielding sheet and the contact terminals. When the electric connector is mated with the mating connector, the first contact portions enters into the mating space, and the elastic body forces each first contact portion abuts a corresponding second contact portion.